What Is the Balanced Spontaneous Reaction and Standard Cell Potential

question 91

Multiple Choice

What is the balanced spontaneous reaction and standard cell potential of an electrochemical cell constructed from half cells with the following half reactions?
Cu²⁺(aq​) + 2e¯ → Cu(s) E° = 0.337 V
E° = -0.130 V

• A)Cu²⁺(aq)+ Pb(s)→ Cu(s)+ Pb²⁺(aq); 0.467 V
• B)Cu(s)+ Pb²⁺(aq)→ Cu²⁺(aq)+ Pb(s); −0.467 V
• C)Cu²⁺(aq)+ Pb²⁺(aq)→ Cu(s)+ Pb(s); 0.207 V
• D)Cu²⁺(aq)+ Pb(s)→ Cu(s)+ Pb²⁺(aq); 0.234 V
• E)Cu(s)+ Pb²⁺(aq)→ Cu²⁺(aq)+ Pb(s); −0.234 V

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Definitions:

Tricarboxylic Acid Cycle

A series of chemical reactions used in aerobic respiration to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins.

Oxaloacetate

A 4-carbon compound; an important intermediate in the citric acid cycle and in the.

Acetyl CoA

A molecule that plays key roles in metabolism, participating in synthesis and oxidation processes within cells.

Anaerobic Respiration

A form of respiration that occurs in the absence of oxygen, producing energy and by-products like lactic acid or ethanol.